A comprehensive examination of the elemental (including radionuclides and heavy metals), mineral, and grain-size composition of sediments from different areas of the Barents Sea was performed. Sediment cores were sampled in the Central Deep, Cambridge Strait (Franz Josef Land Archipelago), Russkaya Gavan’ Bay (Novaya Zemlya Archipelago), and Bear Island Trough. We aim to evaluate how the modern and more ancient environmental conditions are reflected in the elemental and mineral composition, as well as to test indicative elemental ratios. The applied methods include elemental analysis using gamma-ray spectroscopy, X-ray fluorescence (XRF), Inductively Coupled Plasma-Mass Spectrometry (ICP-MS), and X-Ray Difractometry XRD analysis of minerals. Difference in sedimentation rates, grain-size composition, and sources of material, are reflected in downcore variation of Si/Al, Mn/Fe, P/Al, Ti/K, and quartz-feldspar ratios. At boundary Early Holocene/Late Deglaciation, intensive bottom currents from the West-Southern shelf areas contributed to increase of Si/Al and Zr/Ca ratios. Distinct growth of the Si/Fe ratio within the sediments deposited over Late Pleistocene to Mid Holocene may be caused by increased contents of the coarse sand material, as well as by abundant fluxes of clay-mineral-loaded glacial meltwater during the main deglaciation phase. The Mn/Fe ratio used as redox proxy, displayed peaks at different depths related to oxygen concentration growth in bottom water.

中文翻译：

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巴伦支海最近和晚更新世-全新世沉积物的元素和矿物组成：与环境条件的关系

对来自巴伦支海不同地区的沉积物的元素（包括放射性核素和重金属），矿物和粒度组成进行了全面检查。在中部深部，剑桥海峡（弗朗兹·约瑟夫土地群岛），Russkaya Gavan'湾（新瓦亚·泽姆利亚群岛）和熊岛海槽采样了沉积物芯。我们旨在评估元素和矿物成分如何反映现代和更古老的环境条件，并测试指示性元素比率。应用的方法包括使用伽马射线光谱法，X射线荧光（XRF），电感耦合等离子体质谱（ICP-MS）以及矿物质的X射线衍射XRD分析进行元素分析。沉积速率，粒度组成和物质来源的差异，Si / Al，Mn / Fe，P / Al，Ti / K和石英-长石比的下层变化反映了这些元素。在早全新世/晚冰期交界处，西-南陆架区强烈的海流导致了硅/铝和锆/钙比的增加。晚更新世至全新世中期沉积物中Si / Fe比值的明显增长可能是由于粗砂材料含量的增加以及在主要的冰消融阶段粘土-矿物加载的冰川融水的大量通量引起的。Mn / Fe比用作氧化还原代理，在不同深度显示了与底部水中氧浓度增长有关的峰值。西南部大陆架区域强烈的海流导致了Si / Al和Zr / Ca比值的增加。晚更新世至全新世中期沉积物中Si / Fe比值的明显增长可能是由于粗砂材料含量的增加以及在主要的冰消融阶段粘土-矿物加载的冰川融水的大量通量引起的。Mn / Fe比用作氧化还原代理，在不同深度显示了与底部水中氧浓度增长有关的峰值。西南部大陆架区域强烈的海流导致了Si / Al和Zr / Ca比值的增加。晚更新世至全新世中期沉积物中Si / Fe比值的明显增长可能是由于粗砂材料含量的增加以及在主要的冰消融阶段粘土-矿物加载的冰川融水的大量通量引起的。Mn / Fe比用作氧化还原代理，在不同深度显示了与底部水中氧浓度增长有关的峰值。